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College T has 1000 students. Of the 200 students majoring in [#permalink]

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08 Oct 2012, 12:20

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A

B

C

D

E

Difficulty:

55% (hard)

Question Stats:

67%(02:49) correct
33%(01:54) wrong based on 167 sessions

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College T has 1000 students. Of the 200 students majoring in one or more of the sciences,130 are majoring in Chemistry and 150 are majoring in Biology. If at least 30 of the students are not majoring in either Chemistry or Biology, then the number of students majoring in both Chemistry and Biology could be any number from?

Even if you're not sure whether 110 is the highest or lowest Both could possibly be, it doesn't matter, because you know it's a boundary point of the range, which means only answers D or E could be correct.

Both can not be greater than 130, because even if every chemistry major was also a biology major, there are only 130 chemistry majors total. D the solution.
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Re: College T has 1000 students. Of the 200 students majoring in [#permalink]

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16 Oct 2013, 15:33

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Re: College T has 1000 students. Of the 200 students majoring in [#permalink]

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19 Aug 2015, 11:05

Hello from the GMAT Club BumpBot!

Thanks to another GMAT Club member, I have just discovered this valuable topic, yet it had no discussion for over a year. I am now bumping it up - doing my job. I think you may find it valuable (esp those replies with Kudos).

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